⚡Lightning Talk: No More If-Else Soup: Scalable Feature Flag Architecture With Design Patterns
Lightningat OpenFeature Summit NA 2025 · on Monday, 2025-11-10· at 17:05· Building B | Level 2 | B213-214·
summary
Claims that design patterns eliminate sprawling flag conditionals by treating flags as architectural inputs and shows concrete implementations: Strategy pattern for pricing, Decorator for telemetry and caching, Adapter plus Factory for a Stripe→PayPal SDK migration that enables a clean reversible rollout, and Middleware and Component Composition for fraud checks and UI layout variants. OpenFeature serves as the centralized, type‑safe, provider‑agnostic evaluation layer. Resulting code is testable, composable, and reversible, with minimal disruption during migrations and clearer pipelines for layered optional behavior.
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chapters (10)
- 0:00Introduction
- 1:47Scattered feature flag logic
- 2:51Scalable feature flags design
- 3:34Strategy pattern for pricing
- 5:05Decorator pattern for behaviors
- 6:29Adapter pattern for payments
- 7:35Middleware pattern for fraud
- 8:40UI layout composition
- 9:45Scalable feature flag blueprint
- 10:26Conclusion
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